This is a link to the twenty-fourth in an ongoing series billed as 30 Day Challenge to save $1,000 by Ramit Sethi at IWillTeachYouToBeRich.com, his blog on personal finance (banking, saving, budgeting, and investing) and personal entrepreneurship. His series outlines the various ways we can keep money in our pockets.

Today’s tip is to cut your commute expenses by 40% using two techniques: Carpooling and working from home.

Part of why I like this series is Ramit’s recognition that we humans operate with psychological habits that are very hard to change. Most people’s efforts to change in radical ways fail. His suggestion here is not to sell your car and ride a bike, or carpool 100% of the time. Rather, it’s to try carpooling one day a week. That can save a lot over the course of a year. Further, once the initial obstacle to carpooling at all is overcome, it will be easier to do it more.